纵向联邦模型导出

[louhongm]

System information

• FATE Flow version (use command: python fate_flow_server.py --version):
• Python version (use command: python --version):
• Are you willing to contribute it (yes/no):

Describe the feature and the current behavior/state.

Will this change the current api? How?

Who will benefit with this feature?

Any Other info. 纵向联邦模型训练，可以导出完整的模型吗？还是只能导出部分模型